The Lambda/TDK EMI TCR20S30-1-D-OV is a 600W SCR phase-controlled DC power supply engineered for industrial and laboratory environments requiring precise, regulated power output. Operating from 208/220/230V three-phase 50–60 Hz input (190–253V AC range), the unit delivers 0–20V DC at 0–30A with automatic constant voltage/constant current crossover. Internal RFI filtering employing ferrite toroidal chokes and VDE-listed capacitors reduces line-conducted RFI by 1000× compared to earlier SCR designs, meeting VDE 875 Level N and VDE 871 Level A standards. Remote sensing ensures load-point voltage regulation, while local and remote programming enable flexible output control. The supply operates continuously from 0°C to 40°C ambient, incorporates thermostat protection for critical circuits, and uses fan cooling with horizontal air ducting.
Technical Specifications
• Output Power: 600W
• Output Voltage: 0–20V DC
• Output Current: 0–30A DC
• Input: 208/220/230V, three-phase, 50–60 Hz; input voltage range 190–253V AC
• Temperature Coefficient (Voltage): 0.02%/°C of maximum output voltage rating
• Temperature Coefficient (Current): 0.03%/°C of maximum output current rating
• Load Effect (Constant Voltage Mode): <0.1% output voltage variation across 5–100% current change (50–100% output range)
• Operating Temperature: 0°C to 40°C continuous; storage −40°C to +85°C
• Internal EMI/RFI Filtering: Ferrite toroidal chokes with VDE-listed capacitors; 1000× reduction in line-conducted RFI versus prior SCR models
• Standards Compliance: VDE 875 Level N, VDE 871 Level A
• Circuit Protection: Thermostat protection
• Cooling: Fan with horizontal air ducting
– Key Features
• SCR phase control for smooth voltage regulation
• Automatic CV/CC crossover operation
• Remote sensing for precision load regulation
• Local and remote programming capability
• Ferrite-based EMI filtering architecture
• Phase-rotation independent three-phase input
– Typical Applications
• Industrial power conditioning and load testing
• Laboratory bench power distribution
• Long-duration continuous-duty power delivery
• Equipment requiring low RFI emission
– Compatibility & Integration
Optional input voltage configurations available (200V, 380V, 415V, 440–480V) at additional cost. Remote sensing and programmable control interfaces support system integration.
